Electrical sad-iron.



W. A. BRAUN. ELECTRICAL SAD IRON. APPLICATION FILED JAN. 20, 1908.

Patented Nov. 23, 1909.

I WITNESSES: v /54170;; fl x ductor 7. At the back of the iron, upon the Allen and State of Indiana, have invented terior of the base is an electrical heating I adapted torest against the contact point 6 of other line conductor 8. A condenser 15 has outrun STATES r xa nnr or'rion.

WILLIA A. BRAUN, orr'on'r WAYNE, INDiANA, AssiGNofa or ONE-HALF m FREMONT L. JONES, or roar WAYNE, INDIANA.

ELECTRICAL SAD-IRON.

Specification of Letters Patent. Application filed January 20, 1908. 7 Serial No. 411,573.

To all whom it may concern: I

I connection at one side by means of a wire 16, Be it known that I, WILLIAM A. BRAUN,

a I citizen of the United States of America, and I by means of the wire 17 with the terminal 5. resident of Fort WVayne, in the county of In the operation of this invention, the line conductors are connected with any'suitable source of electrical current, and as the current flows through the circuit formed by the conductor 7, heating member, .4, terminal 5, the screw 13, bridge 11, terminal 14 and conductor 8, the base of'the iron becomes heated. When the temperature of the iron rises above its normal working temperature, the bridge v 11 becomes expanded by conduction of heat from the iron, and, being curved, presses outward and thereby breaks the connection of the screw 13 with the contact point 6, thus opening the electrical circuit. The function of the condenser is to prevent the current from forming, an arc when the contact is certain new and useful Improvements in Electrical Sad-Irons, of which thefollowing is a specification.

This invention relates'to improvements in electrically heated sad-irons, and the object thereof is toprovide automatic apparatus in connection therewith for breaking the elecl trical circuit at times when the iron becomes heated above its normal working temperal ture, so that the flow of-electrical current is entirely stopped and economy thereby effected. I accomplish this object by the construction illustrated in the accompanying drawings in which- Figure 1 is a perspective view of the invention showing the exterior of the iron; and Fig. 2 is a diagram showing the. base of the iron, the heating element therein, the circuit breaking apparatus, and the electrical appurtenances.

Similar numerals of reference indicate corresponding parts in both views, and referring now to the same: i

l is the base of the iron, which is made hollow, and 2 is a cover therefor which is secured in any suitable manner and is surmounted with a handle 3. Within the inshall have decreased to a point below its nor-, mal working temperature, the bridge 11. will consequently become contracted so that the screw 13 again rests against the contact point (i so that the electrical circuit is complete and the flow of current resumed, Thus it will be understood that the breaking of the electrical circuit is dependent upon the excessive heat of the iron, and at suchtimes the-flow of current ceases entirely, and the reduction in temperature 0 the iron.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a device of the class low iron base; an electrical heating member therein; an insulated contact terminal having. a point exposed exterior of the iron, and electrical connection with'the heating member; an expanding member having its ends attached in connection with the iron and having normal contact with said terminal; and line conductors, one having connection with the heating member, and the other with the expanding member'the said expanding member 4: of any well known construction, and one end of the heating member is connected to an insulated terminal 5 which is secured in the back of the iron with one of its ends extending through the wall and exposing upon the exterior of the iron a contact point 6. The other end of the; heating member 4 is connected with the line conopposite sides from the terminal 5, are insulators 9 and 10 respectively, and upon these is attached an expansible bridge consisting of a curved metallic plate 11. In the middle of this plate is fixed an internallythreaded stud 12 which affords support for an ad:

cuit for energizing the heating member, said justing screw 13 the inner end of which is expanding member being adapted to be actuated by heat emanating from the heating member.

2. In a device of the class described,a hollow iron base; a heating member therein; an insulated terminal having a contact point and electrical connection with the heating the terminal 5 when the bridge is in normal state of temperature. One end of the bridge is electrically connected with an insulated terminal 14 which has connection with the broken. When the temperature of the ironclosing of the circuit is dependent upon the described, a hol- Patented Nov. 23, 1909.

with the conductor 8 and at'the other side I I member forming apart of the electrical cirs ing member,

member; an expanding member consisting of a curved plate with an adjusting screw therein, the said plate having its ends in fixed connection with the iron base but in- "sulated therefrom and normally having connection by means of its screw wlth sald term nal; two line conductors, one-connected with the heating member and the other with the expanding member; and a. condenser, one side of which has connection with the expanding member, and the other side with the terminal the said expanding member forming a part of the electrical member, said expanding member being adapted to be actuated by heat emanating from the heating member.

3. In a device of the class described, a l1ollow iron base an electrical heating member therein; an insulated terminal having a contact point and electrical connection with the heating member; an expanding member in connection with the mally a contact with said terminal; and line conductors, ,one having connection with the heating member, and the other with the expanding member, the said conductors, heat-- terminal and expanding member each forming a part of the electrical circuit for energizing the heating member, said expanding member being adapted to move .from contact with the terminal when the base becomes heated above its normal working temperature by heat emanating from the heating member.

4. In a device of the class described, a hollow iron base; a heating member therein; an insulated terminal extending through the wall of the base and having electrical connection with the heating member; an expanding member external of the base consisting ofa curved plate with its ends secured to the base and having contact with base and having nor the terminal when the base is at its normal Working temperature; and two line con duct'ors, one connected with the heating member and the other with the expanding member, the latter being. adapted to move from contact with the terminal when the base is above its normal working temperature said expanding member forming a part of the electrical circuit for energizing the heating member, said expanding member being adapted to be actuated by heat emanating from the heating member.

5. In apparatus of the class described, a hollow iron base; an electrical heating member therein; an expanding member attached to the iron and having a movable electrical contact in connection with the heating member; and suitable electrical conductors, one in connection with'the heating member and the other with the expanding member, each forming a part of the electrical circuit for energizing the heating member, said expanding member being adapted to be actuated by heat emanating from the heating member.

6. In apparatus of the class described, a hollow iron; an electrical heating member; an expanding member; and two electrical conductors, the heating and expanding members. being both attached to and carried by the iron and connected in electrical series with the conductors to form an electrical circuit for energizing the heating member, said expanding member being adapted to break the circuit when sufficiently expanded by heat emanating from the heating member.

In testimony whereof I aflix my signature, in presence of two witnesses.

WILLIAM A. BRAUN. 

